Valve-spring-compressing tool



H. W. PAINE.

VALVE SPRING COMPRESSING TOOL.

APPLICAIION FILED JAN-3, 1921.

1,401,920. Patentd. Dec.27,1921.

1 i -5 if m 5 I I WITN ESS E s HENRY W. PAINE, 0F EAGLE GROVE, IOWA.

VALVE-SPRING-COMPRESSING TOOL.

Specification of Letters Patent. Patented D430, 2?? 1921.

Application filed January 3, 1921, Serial No. 434,470.

State of Iowa, have invented a new and useful Valve-Spring-CompressingTool, of which the following is a specification.

This invention relates to implements for compressing the valve springsof internal combustion engines.

' The principal object of the invention is to provide a device enablingan operator to compress all the valve springs on the detachable head ofvalve-in-head motors so that the valve keys may be removed, whereuponthe valves themselves may be taken out for re-grinding.

A further object of the inventionis to provide a tool which is welladapted for use in compressing valve springs of other types of motors,such as those which employ valve cages.

The invention will be best understood from a consideration of thefollowing detailed description taken in connection with the accompanyingdrawing forming part of this specification, with the understanding,

Fig. 2 is a plan view of the same showing the spring in the act of beingcompressed.

Fig. 3 is an end elevation with parts in section showing the springslightly compressed.

The device employs a support or table 5 providing a base of a sizesuiiicient to receive thereon a detachable head 6 of a valvein-headmotor. This base has an abutment 5 near one longitudinal edge againstwhich the detachable head may be. thrust. At the ends of theabutment 5are standards 7 which rigidly support a rod 8 parallel to the base 5.

A lever is connected to the rod 8 so that it may slide freely the lengthof said rod and may swing equallyfreely about the rod as an axis. Topermit this, the lever has an eye 9 at one extremity, the other endhaving a: handle 14:. That portion of the lever ad- ]acent the eye isstraight as indicated at 10, and the portion 13 adjacent the handlefislikewise straightand in alinement with the portion 10. Intermediate theportions 10 and 13 the lever'hasan offset portion 12. This ofisetportion is preferably formed by giving a double bend to the leverwhereby the offset portion ofthe lever is not arcuate but on thecontrary is straight for the greater part of its length. formedintegrally with the lever and is bent at an angle to the portion 10 andthen in V parallelism with the straight portion of the offset 12. This,arm does not have a length equal to the offset 12 but terminates at sucha distance from the offset as well as from the portion 13. that a widegap is left between 1 the extremity of thearm and the portion 13.

Thus the lever may be said to be forked in- An arm 11-is the straightpart of the offset 12 is swung down into engagement with the valve cap17. This depresses the spring 16 and allows the valve key 18 to bewithdrawn. Thereafter the valve itself may be taken out and re-ground.When the-parts are to be reassembled, the spring 16 will be placed aboutthe valve stem 13, then the valve cap 17 will be laid upon the upper endof the spring, whereupon the lever will be swung down to depress thespring so that the key 18 may be replaced.

The base is of sufiicient size to receive all types of detachable headsand the provision springs regardless of any variation in size of saidheads. By the use of this device, the

valves of motors having any number of" cylinders are quickly removedwith a minimum of trouble. When the valves are in cages it is easy tosupport them upon the base 5 in such a way that the lever may above thea base and abutment and parallel springathe combination with aisupport,a

thereto, a lever loosely mounted at} one end on the rod so as to befreely Slidableand swingable thereon, said: lever being jerkedintermediate itsends whereby itlmay be used tocompress-valve springs topermit Withdrawalor replacement ofthe valve keys.

3.111, a, device :for compresslng 'tvalve lever slidablyandc..s'wingably mounted on the support, said lever being bent to fol-man ofllsetportion intermediate of its .e'nds, said ofisethaving apartparallel to the principal length of the lever, and an armintegral with athe lever and bent in a direction opposed to that in which/the offsetportion isfbentlso as to bellsubstantially symmetrical with .said

portionf said arm lhowever terminating at a point spaced ffrom the leverwhereby a gap oropenm'gfis left.

4. Thecolnb'nationavlth a base of a size to reeeive the detachable headof a valve-inheadinotor anda guide rod mountedon and above the base,of aleverslidable and swingable. on said rod and adapted to be moved alongsaid ro'dto engage any "one of the valves. i

5. The combination with a base, of a lever, and means for pivotallyconnecting said lever to-said base, said lever being'bent to 'formv an(offset portion intermediate of its ends, and an armintegral With'thelever and terminating at apoint spaced from the; lever, whereby agaporopening is provided at an intermediate point of the lever.

6. The combination with :a fiat base of a size to receive and supportthe detachable heads of valve-in-head motors, said base having anabutment extending longitudinally thereof-near one edge against'whichthe detachablehead may be thrust, a rod supported above the baseandabutment and as to belfreely slidableand S vvingable there- ,on,uvhereby it maybe used to compress valve springs to permit Withdrawalorreplacement of the valve keys.

"In' testimony, thatfI Ielaim the "foregoing asimypvvn I have-heretoailixed my signature,

a 1 HENRYW. "PAINE,

substantially parallel thereto, and Lib-W61?" loosely mounted at (oneend on the rod so

